RDA5815 Datasheet PDF - RDA
| Part Number | RDA5815 | |
| Description | Fully Integrated Satellite receiver | |
| Manufacturers | RDA | |
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RDA Microelectronics, Inc.
RDA5815-Fully Integrated Satellite receiver for DVB-S , DVB-S2 & ABS-S，MMDS
DATA SHEET
RDA5815
Fully Integrated, Direct Down-Conversion Satellite
Receiver for DVB-S,DVB-S2&ABS-S,MMDS
______
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole
or in part without prior written permission of RDA.
|
| |
 
RDA Microelectronics, Inc.
RDA5815-Fully Integrated Satellite receiver for DVB-S , DVB-S2 & ABS-S,MMDS
Baseband LPF
The bansband low-pass filter is designed to have variable cut-off frequency. The bandwidth of the LPF is
selectable from 4MHz to 40MHz with 1MHz step. The DC-offset calibration can be carried out controlled by the
interface. A innovative technique ensure the filter’s bandwidth variety within 5%.
Reference Oscillator
The oscillator is on-chip integrated and both the crystal and crystal oscillator are supported. The 27MHz is
recommended. The centre oscillation frequency can be adjusted accurately with the XAFC pin (optional
function).
VCO
The receiver integrates two VCOs which ensure covering the full receiving frequency from 250MHz to 2300MHz.
The two VCOs can be switched between each other with relevant register and the VCO’s band is programmed
using 2-wire (I2C) interface. The first VCO oscillates from 2100MHz to 2918MHz, the second oscillates from
2818MHz to 4350MHz. After divided by two or four, lo signal from 900MHz to 2250MHz can be obtained.
LO frequency
Used VCO
Divider
950MHz~1074MHz
VCO2
4
1075MHz~1434MHz
VCO1
2
1435MHz~2150MHz
VCO2
2
PLL
The fractional-N frequency synthesizer use 27MHz reference as default. The dividers, loop filters,
phase&frequency detector, charge pump are all integrated on chip.
Baseband Output Amplifier
Class-AB architecture is selected for the output buffer, this makes it more flexible to the next Baseband solution’s
input load. The gain of this stage can also be programmed with interface to farther increase the receiver
dynamic.
XOUT Output
The XOUT pin can supply the reference clock for baseband chip, which is controlled by the XOUT_EN pin and the
XDIV2_EN pin. The XOUT pin sends out signal when XOUT_EN is Vdd, and doesn’t send out signal when XOUT_EN is GND.
The output frequency is equal to xtal frequency when XDIV2_EN is GND, and is equal to (xtal frequency)/2 when
XDIV2_EN is Vdd.
I2C interface
The interface is the control unit of all the analog blocks, it is provided for configuration and monitoring all internal
registers, the I2C bus consists of two wires: serial clock line (SCL) and serial data line (SDA). The LNA’s gain,
AGC, baseband LPF’s bandwidth, VCO’s and crystal oscillator’s current, VCO’s oscillation frequency are all
controlled by the 2-wire interface.
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole
or in part without prior written permission of RDA.
3
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for RDA5815 electronic component. |
| Information | Total 18 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Product Image and Detail view |  1. - Fully Integrated Satellite Receiver [ Learn More ] | |
| Download | [ RDA5815.PDF Datasheet ] | |
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